Question

olve the problems : Do you!
) If one pen costs 25, what will be the cost of 19 such pens?

19 pens =25X19120 x​

Answer 1

Answer:

Given total cost of 5 pens and 10 pencil = Rs 30

5 pens + 10 pencils = 30

pens + 2 pencils = 1

also given pen cost 3 more than a pencil

i.e, pen = 3 + pencil.

pen - pencil = 3

pens + 2 pencils = 6

_______________

-3 pencils = -3

pencils = 1

pen - 1 = 3

pen = 4

cost of pencils = 1 cost of pen = 4

solution

Answer 2

Given:

↬one pen costs 25

To Find:

↬ the cost of 19 such pens?

Solution:

$\sf : ⟹cost \: of \: 1 \: pen = 25\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \sf : ⟹cost \: of \: 19 \: pens = 25 \times 19 = 475$

$\blue{ \underline{ \boxed{ \pink{ \mathfrak{ \therefore \: cost \: of \: 19 \: pens = rs.475}}}}}$

hope this helps .!